US12349111B2 - Communications device, infrastructure equipment and methods for handling uplink collisions - Google Patents

Communications device, infrastructure equipment and methods for handling uplink collisions Download PDF

Info

Publication number
US12349111B2
US12349111B2 US17/795,234 US202117795234A US12349111B2 US 12349111 B2 US12349111 B2 US 12349111B2 US 202117795234 A US202117795234 A US 202117795234A US 12349111 B2 US12349111 B2 US 12349111B2
Authority
US
United States
Prior art keywords
communication resources
priority
downlink
uplink
communications device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active, expires
Application number
US17/795,234
Other languages
English (en)
Other versions
US20230089138A1 (en
Inventor
Shin Horng Wong
Martin Warwick Beale
Kazuyuki Shimezawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Group Corp
Original Assignee
Sony Group Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sony Group Corp filed Critical Sony Group Corp
Assigned to Sony Group Corporation reassignment Sony Group Corporation ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BEALE, MARTIN WARWICK, SHIMEZAWA, KAZUYUKI, WONG, SHIN HORNG
Publication of US20230089138A1 publication Critical patent/US20230089138A1/en
Application granted granted Critical
Publication of US12349111B2 publication Critical patent/US12349111B2/en
Active legal-status Critical Current
Adjusted expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H04W72/566—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
    • H04W72/569—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient of the traffic information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria

Definitions

  • the present disclosure relates to communications devices, infrastructure equipment and methods for transmitting or receiving data in a wireless communications network.
  • Third and fourth generation mobile telecommunication systems such as those based on the 3GPP defined UMTS and Long Term Evolution (LTE) architecture, are able to support more sophisticated services than simple voice and messaging services offered by previous generations of mobile telecommunication systems.
  • LTE Long Term Evolution
  • a user is able to enjoy high data rate applications such as mobile video streaming and mobile video conferencing that would previously only have been available via a fixed line data connection.
  • the demand to deploy such networks is therefore strong and the coverage area of these networks, i.e. geographic locations where access to the networks is possible, may be expected to increase ever more rapidly.
  • Future wireless communications networks will be expected to support communications routinely and efficiently with a wider range of devices associated with a wider range of data traffic profiles and types than current systems are optimised to support. For example it is expected future wireless communications networks will be expected to support efficiently communications with devices including reduced complexity devices, machine type communication (MTC) devices, high resolution video displays, virtual reality headsets and so on. Some of these different types of devices may be deployed in very large numbers, for example low complexity devices for supporting the “The Internet of Things”, and may typically be associated with the transmissions of relatively small amounts of data with relatively high latency tolerance.
  • MTC machine type communication
  • Systems incorporating NR technology are expected to support different services (or types of services), which may be characterised by different requirements for latency, data rate and/or reliability.
  • a target for the Enhanced Mobile Broadband (eMBB) service is to provide a reliability of 10% with a user plane latency of 4 ms
  • a target for the Ultra Reliable & Low Latency Communications (URLLC) services is to provide a reliability of 1-10 5 (99.999%) or higher for one transmission of a 32 byte packet with a user plane latency of 1 ms [3].
  • systems may be expected to support further enhancements related to the Industrial Internet of Things (IIoT) in order to support services with new requirements of high availability, high reliability, low latency, and in some cases, high-accuracy positioning.
  • IIoT Industrial Internet of Things
  • Cost of a user equipment may be reduced by limiting a number of antennas, limiting a transmit and/or receive bandwidth, and/or simplifying or omitting other hardware typically associated with a user equipment.
  • the present disclosure can help address or mitigate at least some of the issues discussed above.
  • FIG. 3 is a schematic block diagram of an example infrastructure equipment and communications device which may be configured in accordance with example embodiments;
  • FIG. 4 illustrates full duplex communications in accordance with conventional techniques
  • FIG. 5 illustrates half duplex communications in accordance with conventional techniques, which may be adapted in accordance with embodiments of the present disclosure
  • FIG. 6 shows an illustrative example of communication resources used by a half-duplex frequency division duplex (HD-FDD) device
  • FIG. 7 shows an illustrative example of an intra-user equipment (UE) half duplex (HD) FDD collision between an uplink and a downlink transmission which may occur in an HD-FDD device;
  • UE intra-user equipment
  • HD half duplex
  • FIG. 10 illustrates a technique for resolving an intra-UE HD-FDD collision based on the nature of the data to be transmitted or received using the allocated communication resources, in accordance with embodiments of the present technique
  • FIG. 11 illustrates an example technique for transmitting acknowledgement information in accordance with embodiments of the present technique
  • FIG. 12 illustrates an example of an intra-UE HD-FDD collision in accordance with embodiments of the present technique
  • FIG. 13 illustrates a further example of an intra-UE HD-FDD collision in accordance with embodiments of the present technique
  • FIG. 14 illustrates an example of an intra-UE HD-FDD collision in which a scheduling request is transmitted using resources allocated for the transmission of acknowledgement information, in accordance with embodiments of the present technique
  • FIG. 15 illustrates an example technique for transmitting acknowledgement information in accordance with embodiments of the present technique.
  • FIG. 16 is a process flow chart for an example process which may be carried out by the communications device 270 in accordance with embodiments of the present technique.
  • the network 100 includes a plurality of base stations 101 connected to a core network part 102 .
  • Each base station provides a coverage area 103 (e.g. a cell) within which data can be communicated to and from communications devices 104 .
  • Data is transmitted from the base stations 101 to the communications devices 104 within their respective coverage areas 103 via a radio downlink.
  • Data is transmitted from the communications devices 104 to the base stations 101 via a radio uplink.
  • the core network part 102 routes data to and from the communications devices 104 via the respective base stations 101 and provides functions such as authentication, mobility management, charging and so on.
  • Communications devices may also be referred to as mobile stations, user equipment (UE), user terminals, mobile radios, terminal devices, and so forth.
  • FIG. 2 is a schematic diagram illustrating a network architecture for a new RAT wireless communications network/system 200 based on previously proposed approaches which may also be adapted to provide functionality in accordance with embodiments of the disclosure described herein.
  • the new RAT network 200 represented in FIG. 2 comprises a first communication cell 201 and a second communication cell 202 .
  • Each communication cell 201 , 202 comprises a controlling node (centralised unit) 221 , 222 in communication with a core network component 210 over a respective wired or wireless link 251 , 252 .
  • the respective controlling nodes 221 , 222 are also each in communication with a plurality of distributed units (radio access nodes/remote transmission and reception points (TRPs)) 211 , 212 in their respective cells. Again, these communications may be over respective wired or wireless links.
  • the distributed units 211 , 212 are responsible for providing the radio access interface for communications devices connected to the network.
  • Each distributed unit 211 , 212 has a coverage area (radio access footprint) 241 , 242 where the sum of the coverage areas of the distributed units under the control of a controlling node together define the coverage of the respective communication cells 201 , 202 .
  • Each distributed unit 211 , 212 includes transceiver circuitry for transmission and reception of wireless signals and processor circuitry configured to control the respective distributed units 211 , 212 .
  • the core network component 210 of the new RAT communications network represented in FIG. 2 may be broadly considered to correspond with the core network 102 represented in FIG. 1 , and the respective controlling nodes 221 , 222 and their associated distributed units/TRPs 211 , 212 may be broadly considered to provide functionality corresponding to the base stations 101 of FIG. 1 .
  • the term network infrastructure equipment/access node may be used to encompass these elements and more conventional base station type elements of wireless communications systems.
  • the responsibility for scheduling transmissions which are scheduled on the radio interface between the respective distributed units and the communications devices may lie with the controlling node/centralised unit and/or the distributed units/TRPs.
  • a communications device or UE 260 is represented in FIG. 2 within the coverage area of the first communication cell 201 .
  • This communications device 260 may thus exchange signalling with the first controlling node 221 in the first communication cell via one of the distributed units 211 associated with the first communication cell 201 .
  • communications for a given communications device are routed through only one of the distributed units, but it will be appreciated that in some other implementations communications associated with a given communications device may be routed through more than one distributed unit, for example in a soft handover scenario and other scenarios.
  • two communication cells 201 , 202 and one communications device 260 are shown for simplicity, but it will of course be appreciated that in practice the system may comprise a larger number of communication cells (each supported by a respective controlling node and plurality of distributed units) serving a larger number of communications devices.
  • FIG. 2 represents merely one example of a proposed architecture for a new RAT communications system in which approaches in accordance with the principles described herein may be adopted, and the functionality disclosed herein may also be applied in respect of wireless communications systems having different architectures.
  • example embodiments of the disclosure as discussed herein may be implemented in wireless telecommunication systems/networks according to various different architectures, such as the example architectures shown in FIGS. 1 and 2 . It will thus be appreciated that the specific wireless communications architecture in any given implementation is not of primary significance to the principles described herein. In this regard, example embodiments of the disclosure may be described generally in the context of communications between network infrastructure equipment/access nodes and a communications device, wherein the specific nature of the network infrastructure equipment/access node and the communications device will depend on the network infrastructure for the implementation at hand.
  • the functionality of these elements can be provided in various different ways, for example using one or more suitably programmed programmable computer(s), or one or more suitably configured application-specific integrated circuit(s)/circuitry/chip(s)/chipset(s).
  • the communications device 270 will in general comprise various other elements associated with its operating functionality, for example a power source, user interface, and so forth, but these are not shown in FIG. 3 in the interests of simplicity.
  • the transmission 610 from the communications device 501 to the gNB 502 is an example of uplink transmission and the reception 611 by the communications device 501 from the gNB 502 is an example of downlink reception.
  • the communications device 501 could be a user equipment (UE).
  • a switching period 620 (which may also be referred to as a transmission/reception switching period) between the transmission 610 and the reception 611 . That is, there is a time delay between the transmission 631 and reception 611 of data.
  • additional latency in transmitting or receiving data can arise when using half duplex transmission because of the requirement to wait for any ongoing reception or transmission (respectively) to be completed and because of the switching period 620 .
  • Some services in 5G NR require a low latency, such as URLLC, and the switching period 620 introduced by switching between transmission 610 and reception 602 in an HD-FDD device may have a significant impact on the service.
  • a collision (referred to herein as an ‘intra-UE HD-FDD collision) may arise when first communication resources are to be used for transmission by an HD-FDD communications device, and second communication resources are to be used for reception by the same communications device, wherein the first and second communication resources are such that the HD-FDD communications device is unable to use both communication resources.
  • An intra-UE HD-FDD collision may arise because the first and second communication resources overlap (at least partially) in time and/or because the first and second communication resources are not separated in time by the minimum required switching time 620 .
  • the infrastructure equipment may schedule the high priority/low latency data in order to satisfy its latency requirements, thereby resulting in an intra-UE HD-FDD collision.
  • communication resources may be wholly or partially autonomously selected by the communications device. For example, where predetermined communication resources are allocated (e.g. by means of semi-persistent scheduling, or for random access transmissions), the infrastructure equipment may not be aware of the selection of potentially conflicting communication resources by the communications device.
  • FIG. 7 shows an illustrative example of an intra-UE HD-FDD collision between an uplink and a downlink transmission which may occur in a HD-FDD device.
  • the device may be configured with a service having low latency requirements, such as URLLC.
  • An example of a scenario to which FIG. 7 may be applicable is a user equipment attempting both uplink and downlink transmission with a wireless communications network.
  • FIG. 7 shows a first band of frequencies 701 configured for transmitting data to the wireless communications network.
  • the communication resources within the first band of frequencies 701 are divided into time slots in the time domain.
  • time slots 740 to 744 associated with the first band of frequencies are shown.
  • each time slot is divided into 14 time units.
  • Each time unit may correspond to, for example, an OFDM symbol period. It will be appreciated that a different number of time units in a time slot, and a different number of time slots into which the first band of frequencies is divided can be configured.
  • FIG. 7 also shows a second band of frequencies 702 configured for receiving data from the wireless communications network.
  • the second band of frequencies 702 is divided into time slots, which are aligned with the time slots 740 , 741 , 742 , 743 and 744 used for the resources within the first band of frequencies 701 .
  • each time slot is divided into 14 time units.
  • Each time unit may correspond to, for example, an OFDM symbol period. It will be appreciated that a different number of time units in a time slot, and a different number of time slots into which the second band of frequencies is divided can be configured.
  • a wireless communication network provides to the user equipment, on the second band of frequencies 702 at a time t 0 , a first indication 720 of allocated communication resources to the user equipment.
  • the first indication 720 is downlink control information (DCI).
  • the first indication 720 schedules first communication resources 723 for a transmission of data by the user equipment to the wireless communications network from time t 4 to t 5 , as shown by arrow 710 .
  • the first communication resources 723 occur on a Physical Uplink Shared Channel (PUSCH).
  • PUSCH Physical Uplink Shared Channel
  • the wireless communication network transmits to the user equipment, on the second band of frequencies 702 , a second indication 721 of allocated communication resources to the user equipment.
  • the second indication 721 is a DCI.
  • the second indication 721 allocates (as indicated by the arrow 711 ) second communication resources 722 for the reception of data by the user equipment from the wireless communications network, the second communication resources 722 extending from time t 4 to t 5 .
  • the second communication resources 722 occur on a Physical Downlink Shared Channel (PDSCH).
  • PDSCH Physical Downlink Shared Channel
  • the second indication 721 also schedules (as shown by arrow 712 ) third communication resources 724 starting at time t 6 for a corresponding transmission of data from the user equipment to the wireless communications device.
  • the third communication resources 724 may be on a Physical Uplink Control Channel (PUCCH).
  • This data may include hybrid automatic repeat request (HARQ)-acknowledgement (ACK) feedback information.
  • HARQ hybrid automatic repeat request
  • ACK acknowledgenowledgement
  • the second indication 721 is transmitted in response to determining, by the infrastructure equipment 272 , that downlink data having a low latency tolerance (e.g. because it is URLLC data) is to be transmitted to the communications device 270 .
  • the infrastructure equipment 272 determines that it is necessary to schedule the transmission of the downlink data within a certain time period (e.g. so that it is completely transmitted before time t 5 ), and allocates the second communication resources 722 accordingly.
  • the infrastructure equipment 272 allocates the second communication resources 722 for downlink transmission to the communications even though they are incompatible with the first communications resource 723 allocated earlier.
  • Embodiments of the present technique provide a method of operating a communications device in a wireless communications network, the method comprising: selecting first uplink communication resources of an uplink of a wireless access interface for transmitting uplink data to an infrastructure equipment of the wireless communications network, selecting second downlink communication resources of a downlink of the wireless access interface for receiving downlink data transmitted by the infrastructure equipment of the wireless communications network, detecting a collision whereby, in accordance with the capabilities of the communications device, the communications device cannot both transmit signals using the first uplink communication resources and receive and decode signals transmitted using the second downlink communication resources, in response to detecting the collision, determining whether the second downlink communication resources are associated with a priority which is higher than a priority associated with the first uplink communication resources, and if the second downlink communication resources are associated with a priority which is higher than the priority associated with the first uplink communication resources, receiving the downlink data using the second downlink communication resources, and refraining from transmitting the uplink data using the first uplink communication resources.
  • the communications device selects one of the first and second communication resources to be used based on one or more indications transmitted by the infrastructure equipment.
  • the communications device selects one of the first and second communication resources to be used based on pre-defined rules, which may be specified in appropriate standards specifications.
  • the communications device is configured in accordance with two different services. That is, the communications device may be transmitting and/or receiving data associated with a first service having first quality of service requirements, and data associated with a second service, having second quality of service requirements.
  • the first and second quality of service requirements may be characterised by one or more of a maximum permitted latency for transmission of the data, a minimum average data rate, a reliability (e.g. probability of successful reception) and any other parameter(s) which define requirements for the transmission and reception of data.
  • the first service and the second service may be eMBB and URLLC, respectively.
  • control signalling allocating the communication resources may comprise a priority indication which indicates the priority level associated with the allocated communication resources.
  • the priority indication indicates the priority level which is applicable to the corresponding communication resources, and is to be used both in a scenario where the allocated resources collide with other allocated resources in the same direction (i.e. where both resources are uplink resources or where both resources are downlink resources) and in a scenario where the allocated resources collide with other allocated resources in the opposite direction (e.g. in the case of an intra-UE HD-FDD collision).
  • the priority indication is a “Priority Indicator” field included within the control signalling which allocates the communication resources.
  • the priority indication may be a binary indication, in which ‘0’ indicates a low priority level, and ‘1’ indicates a high priority level.
  • the priority indication applies to both sets of allocated communication resources.
  • a Priority Indicator in a downlink grant may indicate the priority of both communication resources allocated on a downlink shared channel for the downlink transmission of data, and communication resources allocated on an uplink control channel for the uplink transmission of acknowledgement information relating to the transmitted downlink data.
  • the communications device may determine the priority levels associated with the colliding uplink and downlink communication resources. If one of the priority levels is higher than the other (e.g. the first communication resources are indicated as ‘high’ priority level, and the second communication resources are indicated as ‘low’ priority), the communications device selects the communication resources having the higher priority, and uses them for their allocated purpose. The communications device refrains from using the communication resources having the lower priority.
  • FIG. 8 illustrates the use of priority indications for resolving an intra-UE HD-FDD collision, in accordance with embodiments of the present technique.
  • FIG. 8 Many of the features shown in FIG. 8 correspond to features shown in FIG. 7 . These are numbered with like reference numerals, and their description will not be repeated, for conciseness.
  • each of the first indication 720 and the second indication 721 comprise respective first and second priority indications 810 , 812 .
  • the first priority indication 810 comprises a single bit set to ‘0’ to indicate that the first communication resources 723 allocated for the uplink transmission of data are associated with a low priority.
  • the second priority indication 812 comprises a single bit set to ‘1’ to indicate that the second communication resources 722 allocated for the downlink transmission of data are associated with a high priority.
  • the priority indications 810 , 812 may be determined by the infrastructure equipment 272 based on quality of service requirements associated with respective data to be transmitted using the first communication resources 723 and the second communication resources 722 .
  • the infrastructure equipment 272 may determine, based on the capabilities of the communications device 270 and the allocation of the first and second communication resources 723 , 722 that an intra-UE HD-FDD collision will be detected at the communications device 270 .
  • the priority indication may be a 3GPP Release 16 Physical Layer Priority Level.
  • the scope of the 3GPP Release 16 Physical Layer Priority Level may be extended to apply to all communication resources allocated by means of the downlink control information in which it is included.
  • the communications device 270 determines that the communication resources allocated by the first indication 720 and the second indication 721 (specifically, the first communication resources 723 and the second communication resources 722 , respectively) overlap in time, from time t 4 to time t 5 .
  • the communications device determines that the priority of the first communication resources 723 is lower than that of the second communication resources 722 .
  • the communications device 270 determines that the second communication resources 722 are to be used for their allocated purpose, and accordingly controls its receiver to receive downlink data transmitted using the second communication resources 722 .
  • the communications device 270 additionally refrains from transmitting signals using the first communication resources 723 , as indicated by the ‘X’ 802 in FIG. 8 .
  • the second priority indication 812 may apply also to the third communication resources 724 allocated by the second indication 721 .
  • a control indication allocating resources both for the transmission of data and for the transmission of subsequent acknowledgement information may comprise separate priority indications.
  • the communications device 270 may determine which resources are to use based on the corresponding priority indication associated with the conflicting communication resources.
  • acknowledgement information (which may be more delay-tolerant) could be associated with a low priority, even when both the data transmission and acknowledgement information are transmitted using resources allocated by the same downlink control indication.
  • the respective priorities associated with communication resources are indicated dynamically.
  • a priority associated with communication resources is configured statically, or semi-statically.
  • the priority of a channel such as PUSCH, PUCCH and PDSCH may be configured in a semi-static manner (i.e. whereby a priority indication remains valid until superseded) by radio resource control (RRC) signalling.
  • RRC radio resource control
  • the network can indicate which channel has higher priority in an efficient manner.
  • the network can indicate that PUCCH has higher priority than PDSCH, and that PDSCH has higher priority than PUSCH. It will be readily appreciated that this is just an example and that other priority arrangements can be configured in such a manner.
  • communication resources are allocated or configured in a periodic, semi-static manner, such as by means of semi-persistent scheduling (SPS) or a configured grant.
  • SPS semi-persistent scheduling
  • the priority of communication resources allocated in this manner are indicated within the signalling configuring the communication resources.
  • PDSCH and/or PUSCH resources which are configured using SPS and/or configured grant may be configured by the network and their respective priorities may be indicated within the SPS and/or configured grant configuration signalling.
  • priorities can be indicated for communication resources which are not dynamically allocated, allowing the communications device 270 to resolve an intra-UE HD-FDD collision when one is detected involving such communication resources.
  • priorities can be indicated by means of static signalling, such as in system information, or RRC reconfiguration.
  • the infrastructure equipment 272 can indicate a priority associated with communication resources which are statically allocated (such as for broadcast channels, synchronisation signals and sounding reference signals).
  • the communications device 270 when the communications device 270 is allocated conflicting uplink and downlink communication resources (i.e. detects an intra-UE HD-FDD collision) the communications device 270 selects for use for transmitting or receiving data, the communication resources whose allocation was indicated by the most recently received signalling.
  • communication resources on a PDSCH (used for transmitting user plane data) have a higher priority than communication resources on a PUCCH (which are to be used for transmitting HARQ-ACK, CSI information, or an SR) and communication resources on a PRACH (used for timing advance-related signalling and RRC connection request transmissions).
  • the communications device and infrastructure equipment are configured to transmit user data such that the probability of successful reception and decoding of a transmission of user data is significantly greater than 50%, for example, it may be around 90%, around 99%, or around 99.999%.
  • the configuration (and corresponding probability) may depend on the service (e.g. URLCC data may be transmitted to have around a 99.999% probability of successful decoding). Accordingly, acknowledgement information is more likely to comprise positive acknowledgement information than negative acknowledgement information. The lack of reception of positive acknowledgement information may not severely impact the provision of a service.
  • a scheduling request or random access channel transmission does not constitute the transmission of user data, but merely requests an allocation of uplink communication resources or the establishment of an RRC connection. Accordingly, the disruption to an ongoing service resulting from a delay to a transmission of an SR or random access channel transmission may be relatively low.
  • these resources may be used to dynamically allocate communication resources for the uplink or downlink transmission of data to or from the communications device 270 , such as by means of downlink control information (DCI).
  • DCI downlink control information
  • downlink communication resources during which the infrastructure equipment 272 may transmit control information to the communications device 270 have a higher priority than uplink communication resources allocated for the transmission of acknowledgement information.
  • the infrastructure equipment 272 determines that the uplink communication resources allocated for the transmission of acknowledgement information conflict (i.e. cause an intra-UE HD-FDD collision) with the PDCCH monitoring period, and in response, refrains from transmitting control information during the PDCCH monitoring period.
  • communication resources allocated explicitly and dynamically may have a higher priority than communication resources allocated statically or semi-statically.
  • Such embodiments can permit the infrastructure equipment 272 to dynamically and explicitly allocate communication resources without regards to the possibility of a conflict with statically or semi-statically-allocated resources because, should any conflict in fact arise, the communications device will, in accordance with embodiments of the present technique, select for use the dynamically allocated communication resources in preference to the statically or semi-statically-allocated resources. Accordingly, embodiments of the present technique can permit greater flexibility in the dynamic allocation of communication resources.
  • downlink communication resources during which the infrastructure equipment 272 may transmit control information to the communications device 270 have a higher priority than uplink communication resources allocated, or selected, for the transmission of an SR. Because the SR may be sent autonomously, the infrastructure equipment 272 may not be able to determine whether an intra-UE HD-FDD collision has occurred (or will occur) in respect of a transmission within the PDCCH monitoring period. Accordingly, embodiments of the present technique can ensure that the communications device 270 will monitor the PDCCH monitoring period resources if the infrastructure equipment 272 would be unable to determine that an intra-UE HD-FDD collision would occur as a result of a transmission using the PDCCH monitoring period resources.
  • FIG. 10 illustrates a technique for resolving an intra-UE HD-FDD collision based on the nature of the data to be transmitted or received using the allocated communication resources, in accordance with embodiments of the present technique.
  • FIG. 10 Many of the features shown in FIG. 10 correspond to features shown in FIG. 7 . These are numbered with like reference numerals, and their description will not be repeated, for conciseness.
  • first and second indication 1002 , 1004 allocate respective first and second downlink communication resources 1012 , 1014 on downlink carrier frequency band 702 (as indicated by the arrows 1032 , 1034 ), and respective first and second uplink communication resources 1022 , 1024 on uplink carrier frequency band 701 (as indicated by the arrows 1042 , 1044 ).
  • the first and second downlink communication resources 1012 , 1014 are allocated on a downlink shared channel and are for the transmission of data by the infrastructure equipment 272 to the communications device 270 .
  • the first and second uplink communication resources 1022 , 1024 are allocated on an uplink control channel and are for the transmission of acknowledgement information by the communications device 270 to the infrastructure equipment 272 .
  • the first uplink communication resources 1022 and the second downlink communication resources 1014 overlap in time from time t 5 to time t 6 .
  • the communications device 270 detects an intra-UE HD-FDD collision 1050 .
  • the communications device 270 resolves the intra-UE HD-FDD collision 1050 based on the intended purpose of the colliding communication resources. Specifically, in the example of FIG. 10 , because the first uplink communication resources 1022 are for the purpose of transmitting acknowledgement information, and the second downlink communication resources 1014 are for the purpose of transmitting user data (i.e. data originating above the MAC/RLC protocol layers), then the second downlink communication resources 1014 are given precedence and are selected for the transmission/reception of data. The communications device 270 accordingly refrains from transmitting using the first uplink communication resources 1022 , as indicated by the ‘X’ 1052 .
  • the selection may be based on a different combination of factors for the two conflicting communication resources. For example, a selection may take account of a type of allocation method in respect of one of the resources, and a combination of type of allocation method and purpose of the other resources.
  • the above prioritisation scheme is applied only if no explicit priority indication is received in respect of one or both of the conflicting communication resources, or if explicit priority indications are received and they are equal.
  • Embodiments of the present technique can provide a method for transmitting control information (such as acknowledgement information, scheduling request or channel state information) using third communication resources.
  • the third communication resources may be allocated for the transmission of acknowledgement information associated with user data transmitted using downlink communication resources.
  • the downlink communication resources may be those resources which, with the communication resources which the communications device refrains from using, result in the intra-UE HD-FDD collision.
  • the communications device 270 determines that it is to refrain from using uplink communication resources allocated for the purpose of transmitting acknowledgement information, such as PUCCH resources for transmitting HARQ-ACK information.
  • FIG. 11 illustrates an example technique for transmitting acknowledgement information in accordance with embodiments of the present technique.
  • FIG. 11 Many of the features shown in FIG. 11 correspond to features shown in FIG. 10 . These are indicated with like reference numerals, and their description will not be repeated, for conciseness.
  • the communications device 270 determines that it is to use the second downlink communication resources 1014 (i.e. it attempts to receive and decode the data transmitted using those resources) and refrains from using the first uplink communications 1022 .
  • the communications device 270 receives and correctly decodes the first downlink data and the second downlink data. However, it is unable to indicate the correct decoding of the first downlink data using the first uplink communication resources 1022 .
  • the communications device 270 combines first acknowledgement information 1112 (which indicates that the first downlink data was received correctly) with second acknowledgement information 1114 and transmits the combination using the second uplink communication resources 1024 .
  • the combined acknowledgement information indicates both the acknowledgement status of the first downlink data and the acknowledgement status of the second downlink data.
  • the combined acknowledgement information comprises an indication of a logical combination of the first and second acknowledgement statuses.
  • the combined acknowledgement information may indicate either that i) both the first and second data were successfully received and decoded, or ii) one or both of the first and second data were not successfully received and decoded.
  • the communications device determines that the first acknowledgement information 1112 (for indicating an acknowledgement status of first data transmitted using the first downlink communication resources 1012 ) cannot be transmitted using the first uplink resources 1022 , because of a conflict between the first uplink resources 1022 and the second downlink resources 1014 .
  • the communications device 270 transmits acknowledgement information based on at least the first acknowledgement information 1112 using the second uplink communication resources 1024 allocated for the purpose of transmitting an indication of the acknowledgement status of second data transmitted using the second downlink resources 1014 .
  • the infrastructure equipment 272 may, in accordance with embodiments of the present technique, determine that the intra-UE HD-FDD collision 1050 has occurred, and may, in response, determine that the communications device 270 will not transmit any acknowledgement information using the first uplink communication resources 1022 .
  • the infrastructure equipment 272 may further determine that the communications device 270 will, using the second uplink communication resources 1024 , transmit acknowledgement information based on the acknowledgment status of the data transmitted using the first downlink communication resources 1012 .
  • the infrastructure equipment 272 may accordingly decode the acknowledgement information transmitted using the second uplink communication resources 1024 and update the acknowledgement status associated with the first data and, in some embodiments, the second data, accordingly.
  • the communications device 270 detects an intra-UE HD-FDD collision, involving uplink communication resources allocated for the transmission of acknowledgement information, before the start of communication resources on which downlink data is to be transmitted, where the acknowledgement information is to indicate the acknowledgement status of the downlink data.
  • FIG. 12 An example of this scenario is shown in FIG. 12 .
  • FIG. 12 shows an intra-UE HD-FDD collision in accordance with embodiments of the present technique. Many of the features shown in FIG. 12 correspond to features shown in FIG. 7 . These are numbered with like reference numerals, and their description will not be repeated, for conciseness.
  • the infrastructure equipment 272 also identifies the intra-UE HD-FDD collision before time t 5 , and determines that the communications device 270 will refrain from attempting to receive or decode signals transmitted during the first downlink communication resources 1212 . Accordingly, the infrastructure equipment may schedule, and transmit, other data (e.g. for another communications device) using the first downlink communication resources 1212 .
  • the communications device 270 determines whether to attempt to decode the data based on a latency requirement associated with the data which would be transmitted using the first downlink communication resources 1212 . That is, when the data which would be transmitted using the first downlink communication resources 1212 is associated with a low maximum latency requirement, the communications device 270 attempts to decode the data, otherwise, the communications device 270 does not attempt to decode the data.
  • the communications device 270 determines whether to attempt to decode the data based on a data decode indication transmitted by the infrastructure equipment 272 .
  • the data decode indication may be transmitted within the indication allocating the respective downlink communication resources (i.e. the first indication 1202 in the example of FIG. 12 ) or within RRC signalling, or using any other appropriate signalling.
  • the communications device 270 may refrain from using uplink communication resources allocated for the transmission of control information, such as channel state information (CSI) or a scheduling request (SR).
  • control information such as channel state information (CSI) or a scheduling request (SR).
  • the infrastructure equipment 272 may not know whether in fact the communications device 270 had selected the first uplink communication resources for the transmission of control information.
  • the first uplink communication resources may be optionally used by the communications device to transmit a scheduling request, if the communications device determines that it has new data available for transmission.
  • FIG. 14 shows an example of an intra-UE HD-FDD collision in which a scheduling request is transmitted using resources allocated for the transmission of acknowledgement information, in accordance with embodiments of the present technique.
  • the infrastructure equipment 270 cannot identify the intra-UE HD-FDD collision 1450 because the use of the second communication resources 1424 is optional for the communications device 270 . However, it determines that there is a possibility of the occurrence of the intra-UE HD-FDD collision 1450 and accordingly decodes the signals received using the first communication resources 1422 on (at least) the basis that they include the control information. Accordingly, the infrastructure equipment 270 receives the scheduling request 1464 and acknowledgment information 1462 .
  • the communications device 270 may refrain from using the allocated downlink communication resources, for example due to an intra-UE HD-FDD collision.
  • the communications device nevertheless transmits a negative acknowledgement using the allocated uplink communication resources.
  • the negative acknowledgement indicates that the downlink data was not correctly received and decoded by the communications device 270 .
  • FIG. 15 shows intra-UE HD-FDD collision 1550 arising as a result of the overlap in time, from time t 4 to time t 5 , of the allocated first uplink communication resources 1512 and the allocated second uplink communication resources 1524 .
  • the communications device 270 refrains from receiving and decoding signals transmitted using the first downlink communication resources 1512 , as indicated by the ‘X’ 1554 .
  • the first downlink communication resources 1512 may be determined to have a lower priority than the second uplink communication resources 1524 because the allocation of the second uplink communication resources 1524 (i.e. the second DCI 1504 ) was received after the allocation of the first downlink communication resources 1512 (i.e. the first DCI 1502 ).
  • the communications device 270 transmits acknowledgement information 1562 indicating that no data was successfully received and decoded using the first downlink communication resources 1512 .
  • the acknowledgement information 1562 is transmitted using the first uplink communication resources 1522 .
  • the acknowledgement information 1562 is transmitted using the first uplink communication resources 1522 , and the first uplink communication resources 1522 are also used for transmitting second acknowledgement information 1564 .
  • the second acknowledgment information 1564 may indicate an acknowledgement status of other downlink data, such as second downlink data transmitted using second downlink communication resources 1514 . Accordingly, less communication resources may be used to transmit acknowledgement information associated with data transmitted using both the first downlink communication resources 1512 and the second downlink communication resources 1514 .
  • the infrastructure equipment 272 determines that the second uplink communication resources 1524 and first downlink communication resources 1512 result in the intra-UE HD-FDD collision 1550 for the communications device 270 .
  • the infrastructure equipment allocates the second downlink communication resources 1514 for the transmission of data to the communications device 270 , by means of a third indication 1506 .
  • the third indication 1506 also allocates uplink communication resources for the transmission of acknowledgment information associated with the data transmitted using the second downlink communication resources 1514 .
  • the infrastructure equipment 272 allocates, as uplink communication resources for the transmission of acknowledgment information associated with the data transmitted using the second downlink communication resources 1514 , the first uplink communication resources 1522 .
  • Embodiments of the present technique also provide methods for infrastructure equipment.
  • the infrastructure equipment performs decoding in a predetermined manner as described in response to detecting an actual or potential intra-UE HD-FDD collision.
  • the infrastructure equipment transmits one or more indications to the communications device 270 to indicate how an intra-UE HD-FDD collision is to be resolved.
  • indications include explicit priority indications associated with communication resources and the data decode indication, as described above.
  • the explicit priority indication may be transmitted together with an indication of the allocation of the communication resources.
  • FIG. 16 is a process flow chart for an example process which may be carried out by the communications device 270 in accordance with embodiments of the present technique.
  • the communications device 270 determines whether it has received explicit indications of priorities which indicate priorities associated with the first and second communication resources. For example, an indication may be included within a DCI which allocates the communication resources.
  • the priority indication may be explicitly associated with third communication resources but may nevertheless indicate a priority associated with the first or second communication resources.
  • a DCI allocating uplink communication resources on a shared channel (third communication resources) may include an indicator of the priority of these uplink communication resources.
  • the DCI may also implicitly or explicitly allocate downlink communication resources (which may be the second communication resources) for the transmission of HARQ-ACK acknowledgement information.
  • the priority of the second communication resources may be equal to the priority of the third communication resources.
  • step S 1610 If it is determined at step S 1610 that the communications device 270 has received indications of priorities for both the first and second communication resources, then control passes to step S 1612 .
  • step S 1612 it is determined whether the priorities associated with the first and second communication resources are equal. If they are, then control passes to step S 1614 . Otherwise, control passes to step S 1622 .
  • step S 1610 If it is determined at step S 1610 that the communications device 270 has not received indications of priorities for both the first and second communication resources, then control passes to step S 1614 .
  • step S 1616 the communications device 270 determines a method of selection associated with each of the first and second communication resources.
  • the method of selection may be one of:
  • the selection may be responsive to an allocation by the infrastructure equipment, or at least partially autonomously selected by the communications device 270 .
  • Examples of selections which are at least partially autonomous include selections of resources on a random access channel (such as a physical random access channel, PRACH) or the selection of resources from a pool of periodic resources, such as selection from a sequence of resources allocated by means of a configured grant or semi-persistent scheduling.
  • PRACH physical random access channel
  • step S 1616 the process continues with step S 1618 .
  • the communications device 270 determines a purpose of the first and second communication resources.
  • the purpose may be for the transmission of user data or control information (which may include acknowledgement information, SR, CSI, RRC connection request and/or downlink control information).
  • the process continues with step S 1620 .
  • the communications device 270 determines a time of allocation if the selection of one or both of the first and second communication resources was in response to an allocation of the communication resources by the infrastructure equipment.
  • the time of allocation may correspond, for example, to a time at which a DCI allocating the communication resources was received.
  • step S 1620 the process continues with step S 1622 .
  • the communications device 270 determines a relative priority of the first and second communication resources, based on the outcome of the determination(s) made in at least one of steps S 1614 , S 1616 , S 1618 , S 1620 .
  • the process continues with step S 1624 .
  • the communications device 270 controls its receiver or transmitter to receive or transmit signals using whichever of the first and second communication resources has the higher relative priority.
  • the communications device 270 refrains from controlling its receiver or transmitter to receive or transmit signals using whichever of the first and second communication resources has the lower relative priority and the process ends.
  • one or more of the steps S 1614 , S 1616 , S 1618 , S 1620 may be omitted, or performed in a different order.
  • the omission of one or more steps may be in response to a determination (not shown in FIG. 16 ) that the communications device 270 is able to determine a relative priority of the first and second communication resources based on the outcome of the determination(s) made in the completed step(s).
  • step S 1620 is omitted if a determination is made based on the outcome of one or more of steps S 1614 , S 1616 and S 1618 .
  • step S 1620 may be performed only if it is determined that the method of allocation of the uplink resources is by means of a dynamic grant, and the downlink resources are allocated for the transmission of user data.
  • the process of FIG. 16 may be modified by the addition, omission, or re-ordering of the process steps. In some embodiments, the process of FIG. 16 may be combined with one or more other techniques disclosed herein.
  • References herein to an allocation of communication resources may, in some embodiments not be limited to the case where the communication resources are explicitly allocated. Accordingly, in some embodiments, communication resources are selected e.g. from a static pool of resources, by the communications device 270 in accordance with predetermined or preconfigured rules.
  • the priority of one or both of the communication resources which are overlapping may be determined by reference to one or more indications transmitted within a group-common downlink control information (GC-DCI).
  • GC-DCI group-common downlink control information
  • a method of operating an infrastructure equipment in a wireless communications network comprising transmitting a first allocation indication indicating an allocation of first communication resources of a wireless access interface for transmitting uplink data by a communications device to the infrastructure equipment, determining that downlink data is to be transmitted to the communications device, the downlink data associated with a latency requirement, and transmitting a second allocation indication indicating an allocation of second communication resources for the transmission of the downlink data to the communications device in accordance with the latency requirement, wherein the first uplink communication resources and the second downlink communication resources are such that, in accordance with the capabilities of the communications device, the communications device cannot both transmit signals using the first uplink communication resources and receive and decode signals transmitted using the second downlink communication resources.
  • a method of operating an infrastructure equipment in a wireless communications network comprising transmitting a first allocation indication indicating an allocation of first communication resources of a wireless access interface for transmitting downlink data to a communications device, determining that uplink data is to be transmitted to the communications device, the downlink data associated with a latency requirement, and transmitting a second allocation indication indicating an allocation of second communication resources for the transmission of the uplink data by the communications device in accordance with the latency requirement, wherein the first communication resources and the second communication resources are such that, in accordance with the capabilities of the communications device, the communications device cannot both transmit signals using the second communication resources and receive and decode signals transmitted using the first communication resources.
  • Paragraph 2 A method according to paragraph 1, wherein the detecting the collision comprises determining that the first uplink communication resources and the second downlink communication resources overlap at least partially in time.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
US17/795,234 2020-02-18 2021-02-15 Communications device, infrastructure equipment and methods for handling uplink collisions Active 2042-02-02 US12349111B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP20158109 2020-02-18
EP20158109.7 2020-02-18
EP20158109 2020-02-18
PCT/EP2021/053683 WO2021165215A1 (en) 2020-02-18 2021-02-15 Communications device, infrastructure equipment and methods for handling uplink collisions

Publications (2)

Publication Number Publication Date
US20230089138A1 US20230089138A1 (en) 2023-03-23
US12349111B2 true US12349111B2 (en) 2025-07-01

Family

ID=69699813

Family Applications (1)

Application Number Title Priority Date Filing Date
US17/795,234 Active 2042-02-02 US12349111B2 (en) 2020-02-18 2021-02-15 Communications device, infrastructure equipment and methods for handling uplink collisions

Country Status (3)

Country Link
US (1) US12349111B2 (de)
EP (1) EP4094526B1 (de)
WO (1) WO2021165215A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12052745B2 (en) * 2020-09-16 2024-07-30 Qualcomm Incorporated UL transmission control
KR20240114285A (ko) * 2021-11-24 2024-07-23 애플 인크. 비-지상 네트워크들에서의 하프 듀플렉스 주파수 분할 듀플렉스 지원
CN120499822A (zh) * 2024-02-08 2025-08-15 荣耀终端股份有限公司 一种通信方法、装置及计算机可读存储介质

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012111805A1 (ja) * 2011-02-18 2012-08-23 株式会社エヌ・ティ・ティ・ドコモ 移動端末装置、基地局装置及び通信制御方法
US20180352582A1 (en) 2015-11-04 2018-12-06 Lg Electronics Inc. Method and apparatus for handling overlap of different channels in wireless communication system
US20210014791A1 (en) * 2016-08-10 2021-01-14 Idac Holdings, Inc. Methods and apparatus for efficient power saving in wireless networks
US20210105803A1 (en) * 2019-10-04 2021-04-08 Qualcomm Incorporated Systems and methods for determining cancellation timeline for user equipment with mixed processing capabilities
WO2021165326A1 (en) 2020-02-18 2021-08-26 Sony Group Corporation Communications device, infrastructure equipment and methods
US20230102738A1 (en) * 2020-02-12 2023-03-30 Beijing Xiaomi Mobile Software Co., Ltd. Uplink and downlink transmission conflict resolution method and apparatus, and storage medium

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012111805A1 (ja) * 2011-02-18 2012-08-23 株式会社エヌ・ティ・ティ・ドコモ 移動端末装置、基地局装置及び通信制御方法
US20130301486A1 (en) 2011-02-18 2013-11-14 Ntt Docomo, Inc. Mobile terminal apparatus, base station apparatus and communication control method
US20180352582A1 (en) 2015-11-04 2018-12-06 Lg Electronics Inc. Method and apparatus for handling overlap of different channels in wireless communication system
US20210014791A1 (en) * 2016-08-10 2021-01-14 Idac Holdings, Inc. Methods and apparatus for efficient power saving in wireless networks
US20210105803A1 (en) * 2019-10-04 2021-04-08 Qualcomm Incorporated Systems and methods for determining cancellation timeline for user equipment with mixed processing capabilities
US20230102738A1 (en) * 2020-02-12 2023-03-30 Beijing Xiaomi Mobile Software Co., Ltd. Uplink and downlink transmission conflict resolution method and apparatus, and storage medium
WO2021165326A1 (en) 2020-02-18 2021-08-26 Sony Group Corporation Communications device, infrastructure equipment and methods

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
3GPP, "Study on Scenarios and Requirements for Next Generation Access Technologies; (Release 15)", 3GPP TR 38.913 V15.0.0, Jun. 2018, pp. 1-39.
Ericsson, "New SID on support of reduced capability NR devices", 3GPP TSG RAN Meeting #86, RP-193238, Dec. 9-12, 2019, 5 pages.
Holma et al., "LTE for UMTS OFDMA and SC-FDMA Based Radio Access", John Wiley & Sons, 2009, 232 pages.
International Search Report and Written Opinion mailed on May 17, 2021, received for PCT Application PCT/EP2021/053683, filed on Feb. 15, 2021, 10 pages.
Nokia et al., "Revised SID: Study on NR Industrial Internet of Things (IoT)", 3GPP TSG RAN meeting #81, RP-182090, Sep. 10-13, 2018, 5 pages.

Also Published As

Publication number Publication date
EP4094526A1 (de) 2022-11-30
WO2021165215A1 (en) 2021-08-26
EP4094526B1 (de) 2025-09-10
US20230089138A1 (en) 2023-03-23

Similar Documents

Publication Publication Date Title
US12167445B2 (en) Method for indicating the allocated resources for a HARQ message in a random access procedure for a low-complexity, narrowband terminal
US12232104B2 (en) Communications device, infrastructure equipment and methods
US11864240B2 (en) Telecommunications apparatus and methods
US12200722B2 (en) Communications device, infrastructure equipment and methods
US12477545B2 (en) Uplink control information related to configured grants
US20230261840A1 (en) Radio nodes, network nodes, circuitry, systems and methods
US12058672B2 (en) Communications device, infrastructure equipment and methods for the reception of control information by a communications device in a wireless communiations network
TW201911930A (zh) 衝突處理之方法、及其使用者設備和基地台
US20190090240A1 (en) Method and device for transmitting uplink in unlicensed band
KR20160114606A (ko) 통신 디바이스 및 방법
US12445239B2 (en) Communications device, infrastructure equipment, and method for determining a use of first physical resources and second physical resources based on a first format indicator and a second format indicator
EP3925338B1 (de) Kommunikationsvorrichtung, infrastrukturausrüstung und verfahren
US20250358078A1 (en) Communications device, infrastructure equipment and methods
US20230336314A1 (en) Communications devices, network infrastructure equipment, wireless communications networks and methods
US12349111B2 (en) Communications device, infrastructure equipment and methods for handling uplink collisions
US20220330211A1 (en) Communications device, infrastructure equipment and methods
JP2016220194A (ja) 無線通信における制御チャネル
US20240430042A1 (en) Methods, communications devices, and network infrastructure equipment
US12588030B2 (en) Communications device, infrastructure equipment, and methods for determining whether to transmit first data using first uplink communication resources
WO2025065581A1 (en) Rs transmission opportunities and grants in wireless communications

Legal Events

Date Code Title Description
AS Assignment

Owner name: SONY GROUP CORPORATION, JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:WONG, SHIN HORNG;BEALE, MARTIN WARWICK;SHIMEZAWA, KAZUYUKI;SIGNING DATES FROM 20220706 TO 20220708;REEL/FRAME:060622/0102

FEPP Fee payment procedure

Free format text: ENTITY STATUS SET TO UNDISCOUNTED (ORIGINAL EVENT CODE: BIG.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

STPP Information on status: patent application and granting procedure in general

Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION

STPP Information on status: patent application and granting procedure in general

Free format text: NON FINAL ACTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: RESPONSE TO NON-FINAL OFFICE ACTION ENTERED AND FORWARDED TO EXAMINER

STPP Information on status: patent application and granting procedure in general

Free format text: NOTICE OF ALLOWANCE MAILED -- APPLICATION RECEIVED IN OFFICE OF PUBLICATIONS

STCF Information on status: patent grant

Free format text: PATENTED CASE